ghsa-cf9r-5584-2473
Vulnerability from github
Published
2025-07-03 09:30
Modified
2025-07-03 09:30
Details

In the Linux kernel, the following vulnerability has been resolved:

RDMA/cma: Fix hang when cma_netevent_callback fails to queue_work

The cited commit fixed a crash when cma_netevent_callback was called for a cma_id while work on that id from a previous call had not yet started. The work item was re-initialized in the second call, which corrupted the work item currently in the work queue.

However, it left a problem when queue_work fails (because the item is still pending in the work queue from a previous call). In this case, cma_id_put (which is called in the work handler) is therefore not called. This results in a userspace process hang (zombie process).

Fix this by calling cma_id_put() if queue_work fails.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38151"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T09:15:30Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cma: Fix hang when cma_netevent_callback fails to queue_work\n\nThe cited commit fixed a crash when cma_netevent_callback was called for\na cma_id while work on that id from a previous call had not yet started.\nThe work item was re-initialized in the second call, which corrupted the\nwork item currently in the work queue.\n\nHowever, it left a problem when queue_work fails (because the item is\nstill pending in the work queue from a previous call). In this case,\ncma_id_put (which is called in the work handler) is therefore not\ncalled. This results in a userspace process hang (zombie process).\n\nFix this by calling cma_id_put() if queue_work fails.",
  "id": "GHSA-cf9r-5584-2473",
  "modified": "2025-07-03T09:30:35Z",
  "published": "2025-07-03T09:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38151"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02e45168e0fd6fdc6f8f7c42c4b500857aa5efb0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ac40736c8c4255d8417b937c9715b193f4a87b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b05aa3692e45b8249379dc52b14acc6a104d2e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92a251c3df8ea1991cd9fe00f1ab0cfce18d7711"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac7897c0124066b9705ffca252a3662d54fc0c9b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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